Method for asynchronously transmitting a serial data

Abstract

A method is proposed for asynchronously transmitting a serial data comprises steps of: providing a first signal and a second signal, the first signal and the second signal having a state in a first interval; and keeping the state of the first signal and changing the state of the second signal into another state in a second interval for transmitting the serial data.

1. A method for asynchronously transmitting a serial data, said method comprising steps of:
 providing a first signal and a second signal, said first signal and said second signal having a state in a first interval; and 
 keeping said state of said first signal and changing said state of said second signal into another state in a second interval for transmitting said serial data, 
 wherein said states of said first signal and said second signal include four forms: a first form and a second form corresponding to a first data and a second data; and a third form and a fourth form corresponding to a bit content. 
 
   
   
     2. A method according to  claim 1  wherein said state of said first signal is a voltage level having a high voltage and a low voltage. 
   
   
     3. A method according to  claim 1  wherein said state of said second signal is a voltage level having a high voltage and a low voltage. 
   
   
     4. A method according to  claim 1  wherein said first form is that said first signal and said second signal are at a high voltage level. 
   
   
     5. A method according to  claim 1  wherein said second form is that said first signal and said second signal are at a low voltage level. 
   
   
     6. A method according to  claim 1  wherein said third form is that said first signal is at a high voltage level and said second signal is at a low voltage level; and said bit content is 0. 
   
   
     7. A method according to  claim 1  wherein said fourth form is that said first signal is at a high voltage level and said second signal is at a low voltage level; and said bit content is “1”. 
   
   
     8. A method according to  claim 1  wherein a sequence for transmitting said serial data is: A,A(D 1 ),A,A(D 2 ), . . . ,A,A(Dn 1 ),B,B(D 1 ),B,B(D 2 ), . . .B,B(Dn 2 ), where A is said first data, B is said second data, A(Dn 1 ) is said bit content of said first data, and B(Dn 2 ) is said bit content of said second data.